Project: Blender Extensions
Tracker: Py Scripts Contrib
Author(s): Bart Crouch
Script name: Motion Trail
Wiki page: http://wiki.blender.org/index.php/Extensions:2.5/Py/Scripts/Animation/Motion_Trail
SVN Download: http://projects.blender.org/scm/viewvc.php/*checkout*/contrib/py/scripts/addons/animation_motion_trail.py?root=bf-extensions
The add-on uses right-mouse button to select and Q-key to move. Press Q-key again to confirm movement or Escape-key to cancel.
Note: you can't select a keyframe, handle or timebead when it is located on top of an object.
There are 3 modes in the add-on: Location, Speed and Timing.
* Location: select a keyframe or handle and move it to change the location data of the object's animation path.
* Speed: select and move a timebead to change the speed-in or speed-out of the associated keyframe.
* Timing: select and move a single keyframe to change the location of that keyframe on the timeline. Selecting and dragging a timebead moves all keyframes (except from the first and last one) on the timeline.
The Speed and Timing mode don't change the location of the object , only the speed. This holds true as long as the handles in the graph-editor don't overlap.
The motion trail can display different colours. Most interesting are the speed and acceleration gradients.
Speed: blue is slow, red is fast
Acceleration: green is positive, yellow is no acceleration, red is negative acceleration.
Note: the colours are relative. So each is speed gradient contains both 100% blue and 100% red.
Warning: At the start and end frames the gradients might be slightly off.